Techonlogy of Ultrasonic Control of the Well-Bonded Pipe Coupling Space Filling

Григорій Семенович Тимчик, Олександр Олександрович Подолян

Abstract

The method of well-bonded pipe coupling space filling control by means of ultrasonic NDT methods has been proposed. Use of ultrasonic NDT method for coupling space filling with self-hardening substance (both compound and molten metal coupling space filling) has been analyzed. Taking into consideration the high temperature of the repair structure during repair works performance when using a molten metal, which is determined by high temperature, the application of piezo-electric transducers is ineffective. Therefore, it is offered to use electromagnetic (EMA) transducer as the emitter and receiver of ultrasonic oscillations. Theoretical and experimental research results of weld bonded coupling space filling with molten metal control have confirmed the efficiency of EMA method use. The proposed control method allows to reach the maximum efficiency in the use of coupling space filling with molten metal.